{
  "manageEntity": {
    "action": "Save",
    "entityId": "1017110824",
    "entityType": "Track",
    "nonce": "0x0ea4f291219efee9feacc3ede3f46610ed2eb9829da1def4cb06b1d08fc09ba7",
    "signature": "0x747dcf3f0bf2413f55c65f8e69f8715554d585adbef685e3dc5e33951feb9bb20666ff8d6875f6e8e11a961bd29707f2753e156d5a166310314fb44bd51a845a1b",
    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}