{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375577",
    "entityType": "User",
    "nonce": "0x4183f35ced0dfe96ddb199686529a8580f80a2ac5ceb05ce2f27f90978f9832e",
    "signature": "0xd108d5fad5d2c5ed36425e6541ef23d78bd35f8f15b99e3add26d1b8548e9dd51bc3580fe38489d859a829be6b2891a615dbe08b0695198614544e3a789201d71b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}