{
  "manageEntity": {
    "action": "Save",
    "entityId": "1192044918",
    "entityType": "Track",
    "nonce": "0x06a064e30adda8706a3523d34bbe71c54dfad05c72e686f6a6ab766642677aac",
    "signature": "0x0aabb129ac4aab1a5d344df47e0837662224f3d614bbba388d635d5b1c37f3485f5bf5114f0ddd4a5d575211716a7d9e19cfe9a3cdf40659a4bc7367a5b52b8d1b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}