{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "626857797",
    "entityType": "User",
    "nonce": "0x9cb010ec6d9e4db09ec2004448c503f901614b2d282fc659a8e468667a77ae06",
    "signature": "0x583190feb89b513869d37873823b7d979b2b336ca2eedf7f94995543e4004143702d6a7c97c07bff968acff4b167731a8b73f2656d9f42dbf679ac6b7f2ef63c1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}