{
  "manageEntity": {
    "action": "Save",
    "entityId": "1014558",
    "entityType": "Track",
    "nonce": "0xa4d5019299faf7e4dee35b09455001a8a9405d072b680199f38d566b0faf9cc1",
    "signature": "0xb98cb98207b54ed448a8246078150ab4f19a3bffca715ea042008e9d00d3e8d34fbbc4d3ff89052b4d5bd9ca1ae407d6b0291911e242b982df8d63c25db5cf401c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}