{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105324",
    "entityType": "User",
    "nonce": "0x3c6f091cd5e74b0c77b3940e8de7c567c9a0bb55eb4a6684d586c357a4cef84e",
    "signature": "0x5b9ba78c66cf6f8b73c27dce9607cbff14c41cc838fb00715dcfc8ac99ff3c99227fd2682e9e4735da6585f48207d10ce17ed290a1b8f26a9437f2bef3ee18091b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}