{
  "manageEntity": {
    "action": "Save",
    "entityId": "985783",
    "entityType": "Track",
    "nonce": "0x8fb19efed56024372eb4c47288cf9f2e312e10e5463b4d3baf92e94becadff82",
    "signature": "0xd181f5280106b7475a141009a74935fae4f72e8f2aede3862822e46c792dd8a65db970e729e11a611c5c42506edf38d996fac7c62f627906d28c3e672fff78601c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}