{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x9d0a5ee6830ab800cfea74d54ed02d17443600d9f0a31760c3b5553dcfcbdec8",
    "signature": "0xb44c5e3fa542f40dab13f83384bffbe9a44319638a4c682c4e4423124bc71db852ba05641de2ac7696022b0b2ada2ddbcfb41251962ac2ba5f96db18cb2464431c",
    "signer": "0x45dd4B563AbeCaB329e918D13925cDdFBca768C3",
    "userId": "265042309"
  }
}