{
  "manageEntity": {
    "action": "Save",
    "entityId": "1327859602",
    "entityType": "Track",
    "nonce": "0x3730e973e6bb6b2dca540f20e9496540477f563a3c32f411f9d83db023a74659",
    "signature": "0x40ede691084d46344bc3abe9619dc1b04055b8a80249c81c6d29bdf3497cf4f73a283c1b7c8fa04b78258376ec3740f6a2fafe422fc589612d9ac8cc9c1001221b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}