{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321696490",
    "entityType": "User",
    "nonce": "0x73ba735a540cf8a48aad2328f6ce2e9f43d2e9338ec14a7c2bd62d82138a9438",
    "signature": "0x2b205da152c27e934e67174bddecda1945ae64d57cff0315eb23c72517089fd641ffba5317d35f0f44c9d1a8b41c9f8c2851a4c9d9facc62515c493a64b53ab01c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}