{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "129101",
    "entityType": "User",
    "nonce": "0x22ad0e98b8f84c1a7c91c5511b782604522cae5376ea3a19b75660e8eaeaebc6",
    "signature": "0x72f46bfe43a9b9762d79838f855a398cda11b260e75347f1c042321d8ef32c50467c1d32caa27530563fdbab5954bdcd84529848f2408b5b453bd0f0f5e8a8b31b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}