{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16564",
    "entityType": "User",
    "nonce": "0x5fbf09caf6a020688a3fe0dafd2b645e07e3f94cd7beaa000933138411fb7264",
    "signature": "0x30247f6c35b75ffeeb1eee6e0cc52b9c07e2f783082759a0120a3b1a0f84616d36de8f1c8868eaecb07bb936e9c25e4bcd36cd05a1505cc61715c948ad30d8b41c",
    "signer": "0x07AeE9aa7BdD29c94193F5B00c0ed5CC3CA15Ccf",
    "userId": "650995561"
  }
}