{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059098",
    "entityType": "Track",
    "nonce": "0xbee400d7df660772eae9122ac1234baf214e911a80b2ff2ffc966b3f37d9016d",
    "signature": "0xaf6e7aa8f28da394156b4e717f118e8e88fe575e4b89851be2c12407bbd5acb97915942f87c7cc5852ab8fcdcee5946af116fe13d9a61c04ee8e56d5cc97119d1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}