{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x7cd72d68ce4d1762c32368f04d03ceec21944827e13366db06980adae4724664",
    "signature": "0x97cf5e4eea8b21158e7cdad0c52634fbda63b8bc9572cc2d23639206fd8f8ca6296f48c97b1548c82e73083f0b1e44f84d6ad3eed40de3f3839f51ffae43e3e91c",
    "signer": "0x64F598C81c0625EA190d421bEe9C604A9EaD5ea6",
    "userId": "462839245"
  }
}