{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1674010",
    "entityType": "User",
    "nonce": "0x55b7dad0f051ad0c02ba8a3130611c311f4f87ea1cebf3b823b9d050a7f7ddd8",
    "signature": "0x83de7f6623f6cf4dc4de5d0571254d52d5b89a117f0a84b9797a3e287798b50675d6ec5b87274d30caf629905bb8a5f830c3405f6ee503ed75a025f888ccc5711b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}