{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1684",
    "entityType": "User",
    "nonce": "0x1e5be9849e4debefcd956597347033cd47f8cdae8cf7ca6b16fe5d8b49a5386d",
    "signature": "0x5d72c3bb8df111a66a760c3cb5da975f64d8b48ad1a38bc556070a398c5e7ffb3cec17ef9bf83d40102766d945fe8ba8af557bcfdfc8fc2d9508a6e41793e6341c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}