{
  "manageEntity": {
    "action": "Save",
    "entityId": "87222376",
    "entityType": "Track",
    "nonce": "0xa90f08e135610fc83cc57fa1414433712b851168f0a9d08af978c670d37e5b8a",
    "signature": "0x05eec6564525a2b80ae5d1bf94f7fa414e173e3af86c1d18dd751bc9f8eb2724050c1d365909ac57c713376c9a2603a97af6d0889b272821473ba19e3aa33fdb1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}