{
  "manageEntity": {
    "action": "Save",
    "entityId": "1130013720",
    "entityType": "Track",
    "nonce": "0xdc8fe3d1b28ddb7077b5b741911d8b52598b7db105f01fe5ad4e54507a1e6a73",
    "signature": "0xbc327da329ce7b003dfa0369cc7912e73154c84f6ccdfa5ca1dc2c422a0bf1411e93e901fb224729fe1e5fbff3d642eef881b15e3332945c82447d937d86390a1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}