{
  "manageEntity": {
    "action": "Save",
    "entityId": "2086216172",
    "entityType": "Track",
    "nonce": "0xb64e31e86d374e22577798da9958069b594b6c9f063782f03d6181e29ed6621e",
    "signature": "0xa8b85514df0bb1cd340ee249d829f863358026711fa3b1fa82f1bb24d52c24867167b308a5f4ab6f7a037cee2520aa000e9e53725a11172dd426ab787b494a421c",
    "signer": "0xBBBE9eFc177a4E708d317195Fa81aA6E8E2F7E92",
    "userId": "557135181"
  }
}