{
  "manageEntity": {
    "action": "Update",
    "entityId": "772119993",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x561976ecbeb15e57dffe0eb7ddce2ddbecee9c875fa4193d36730219059e649c",
    "signature": "0x7e4ce11226f219efd87144c808b0af11deb3ce952e9f8bf00f26d61b3de2f7a56703aebc04a623ce7dd44ad1fea5d8b9bd9834a86ace12e1782df1590a6b64451c",
    "signer": "0xc49cF32F76ea0016B73F248e8E1B6804386046F3",
    "userId": "772119993"
  }
}