{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1882758",
    "entityType": "User",
    "nonce": "0xdcb0db0c8c624502d4168f5de9f6ed112426a2f5296fdac82b002771ddc251e9",
    "signature": "0xb743962a9ddb3f05dcea0a418d753d9489fd1c7597487f240469e456fc3cc7af799d69ecccc2f1a9ca966b0ada6a65530c4e9d09f4fc2e87f805d7c76c2c83031c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}