{
  "manageEntity": {
    "action": "Save",
    "entityId": "62997",
    "entityType": "Track",
    "nonce": "0xd5ea634bd805e609ccff1cee92888b5a2ac29e7479ba31ffea258e3614149ced",
    "signature": "0x609a0fbe7f2406ac382200117a6e2b8362bcd19f8ce7fbee8feb90ec96a92405634867b2e44f639bef6ca228df702dc1b4194fa05229702927e8e2bd54be10161b",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}