{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0e6f7de3b5aaa1345c1ddbc9d7e7750490627baa40ea7540fec9f217192e46b8",
    "signature": "0x50090d4fb25e29ac3535506069de531c44703493994c0240c2d964da99ec664a23422f3c72eaeb94ccaadf9543ed98064845afc8c9f92c596dc3ec4e73dbe8801c",
    "signer": "0xa5dE7933A10BbeC8b86905819DD03623E2e96d2D",
    "userId": "722890813"
  }
}