{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1de0fd1e6ed57c6cd8ee7766b7109eb70a0ce89479c7dc4b10efe54173033543",
    "signature": "0x294cab78a50bd69efe87c127648d2cff446385242bdb8b17cf0008b7cc4a57550e9b33559f82f52b77ca8d595f7b355fbee1848ff506db12a8fec7e7c41b12881c",
    "signer": "0x7A36eBF15fC48F5a684Cd15006959be84dFf15d2",
    "userId": "751214239"
  }
}