{
  "manageEntity": {
    "action": "Save",
    "entityId": "794927281",
    "entityType": "Track",
    "nonce": "0xd865139a545076c80fbe5034634fae53bde411c6d256576f57cbf4b9b27d5d2b",
    "signature": "0x8ff1efa94957688c440c84ae0d54782f9db567a7dfd62997349c10b0564efe6c4d2225f268d2f00469bd8f8e3c60152ace73e4429bd3e033ef67a8aacdb3a5121c",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}