{
  "manageEntity": {
    "action": "Save",
    "entityId": "1527185081",
    "entityType": "Track",
    "nonce": "0x76be7ed3db3ac4ea2fd09e3b0813735192eff333fae1a12a6b65e57d8e727cd7",
    "signature": "0x82ee6a0295c09a07e33fc60dabc4e978c392480e10e497dfff43128cf8ebb58f273b007dd4b9157a6d2101e82dc22b7ccdc62a9e45590d11cb6579168daf64961c",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}