{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe973cf4605ead4ca60668ee5bfee07456067e4a45674f810ff26e7cadadde90e",
    "signature": "0xdd4d801a9c332381c266470916376eb10f308a7ca330be5663d90182f496b5fc31df1c8b6068688a7470460366fb3bf2a99705167e22ed28a07aeee4da65b1bd1c",
    "signer": "0x0e5312f4Ae4E78F87abbfe37b52257E58F93Eb56",
    "userId": "863949363"
  }
}