{
  "manageEntity": {
    "action": "Save",
    "entityId": "736952026",
    "entityType": "Track",
    "nonce": "0x99c3f83d17806c929a11f19f8db040e760853a138917dfb78f073282e24ea974",
    "signature": "0xec0e76132f5ed1f23fce0822cdb08e4fdc8019c9cd2cc25804b25a44653337c568f1fb0c363e16db765d0c76ea87ccd92d0172f4bca520e52105b32a0479d5701b",
    "signer": "0x12705C8Fe8CE886CeFEFa0d4d46E906f2c35C954",
    "userId": "477934274"
  }
}