{
  "manageEntity": {
    "action": "Save",
    "entityId": "634969312",
    "entityType": "Track",
    "nonce": "0x69792cf8d99e5402f8876b1b9bfc076da66df5460dcdfa3b69f8034cba21f3f4",
    "signature": "0xd79d4f6bc5fcdbe19605b48eddf53310809abd9b1fed8a1c21a7957decf7d82c6010c8b86e7a77234d231e68ee0817d45aa6fe110a03a7b473055d0be1b579ca1c",
    "signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
    "userId": "317847"
  }
}