{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0xca849ad64456c9127acf855d7657308927c113200cab3b2fced7c58cd31fb3f0",
    "signature": "0x684a0ac4e5b197dd51101f3824a2efa0f05728ffc1cd63d43e94003aeb85e5ea718c9d296238a9a872bdcce4a46e63e9cb39c17310c5c44aca1f41145b8e09641b",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}