{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0e8d22c7f3f4406c5910d0a4c9acd0d72cc634cf541550c5048baa0bb6c5bc9",
    "signature": "0xc333b3d7f86ae9279b15cbaebe74d87563822f2966de16261a94ceab7fc849c324f87c92f09d057800bfb0af1634103c33297c3dcd8d918875cbe0ae341588501b",
    "signer": "0x91B0339EB69a613B05022Db1D1cb0a19CB333Bd4",
    "userId": "393259142"
  }
}