{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2750f16bfd7f5ba15b58f72d64585bef83d5f631e0710715628d3ab57d473f51",
    "signature": "0xb9f14bb4c45ac3acab705b80f408034bd9c47b6e0d7b18df3de8684e9c736c946205534d58ca7f8820289d23bad4966bc8cd096918f86999acca9985f73684641c",
    "signer": "0xa7b95AB43281D33147C8dA023e6BC205D41d821b",
    "userId": "506460249"
  }
}