{
  "manageEntity": {
    "action": "Save",
    "entityId": "91926853",
    "entityType": "Track",
    "nonce": "0xa94c32364f67d1d51f9a7282370b25edaefe22c054e43257f1c743e8bad9ea31",
    "signature": "0x36c97cb96d40276ef0aec9c7d99349a7346443efacf87f9849325ff1a767886a0f07a6aad8832d02b58cb15bd897faa76994771614e55c698c83077cc41a23381b",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}