{
  "manageEntity": {
    "action": "Save",
    "entityId": "169094",
    "entityType": "Track",
    "nonce": "0x51dc10b57477f9885db693a4e6709f138e8c65cf3eeacd682c073df05d4d441e",
    "signature": "0xe5ed621aefa36db41bb90de59b9f1657275f5563e5c64e675895e52410ae62a8319644e7f95929a7c9f346123b5b1d3c964e52202daf5ee1c95d57c402ece56c1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}