{
  "manageEntity": {
    "action": "Save",
    "entityId": "1033903172",
    "entityType": "Track",
    "nonce": "0x08d34a093bcb0e736ba55d9f5ad5b2241d4a3650396d932e9ce3c0d2573897ed",
    "signature": "0x239c5b0071cb590fb675a25f18093d25e34ad7b4039113a256c249cf0d0996222266aa54cff7ce45628270db2840c1bcd73c91aff131691725b1b53e988df8981c",
    "signer": "0x48c57b64a5a12Dc7C7742Fdb629EEce52FF5591D",
    "userId": "930634116"
  }
}