{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "528787281",
    "entityType": "User",
    "nonce": "0xa9c8501a2acd993db1b45606639b33110d4e2ff0711a21430499c2aca9c89b0a",
    "signature": "0x4e3de853ecc4ec08236e1a092f3a0cd69e041b139dde1ce2b32fd61c6bd423f62cdd226993d68c8f1bbd09b49f399f5af344af1b7c7be163f5c6f80f78eb02841b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}