{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4577",
    "entityType": "User",
    "nonce": "0x6c5fe13328b8ec25a4501ddc7cdc649b0c24035ea04483ba6bfdba5a572ef1f2",
    "signature": "0xa8c640128deff20c350768b51b099a2934b40d9e08ec5a949bd8398eb93b08fd100650a22a3443ae6d608c8d87c74bbc6fde9633e6e7290bcf0af0d44f6cb4e41b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}