{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x327ebd6bd47ce441c8278f77d0a237a6667a98c9030c3e4e9ce9fe2232ba3f10",
    "signature": "0xb8b72f315b9421892d9f4ba2fbd4d8ea99696dbd294304dd74b8b462f40791e67485bc0325e24a056347cdb228a742ce89491b233895706d7249bc79295411001c",
    "signer": "0x0a2f1c8f4bF6F0569075C3E50183F9521E8cC58e",
    "userId": "678489664"
  }
}