{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "824921192",
    "entityType": "User",
    "nonce": "0x1b21a7f90b5ba5387c3d01a645567b3a72c048cf2b08353c2d33120ce98bc17b",
    "signature": "0xd4b71c5a32209270d3899db16f694afa50a89e104b20a342d28d07ef6dd5d1c25db01fb3d2d5cc11d84f547da5a7a1a303fe8fed8ac74dc7bc1ef302199e596d1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}