{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "550557206",
    "entityType": "User",
    "nonce": "0xefac0d6817a942cf7f037d285cdf206e6fa822e8103b4c3377c35a6a86f7dc9c",
    "signature": "0x7c83419e067cba1aa2020a69a387c9221a64b79de789ccde2e17572667db42315206e65d130b1bf55dc93443be828ddc0b8b58b57eb291a06845e2463f1c36b41c",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}