{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389177",
    "entityType": "User",
    "nonce": "0xc997d70831a0095511441dd0a941b688d7d8088428b7c16b2fa8adcba9b10ce5",
    "signature": "0xb501800501decd138e91fc8094a1b6d75e0fd0d3e76d36b0e2507b6d9cb3d5573098f4fbd682adec90b4b47a5afbba0cd541b6d937d4cafdd1c3530a4702b8431b",
    "signer": "0xfEf199273dc1B7112aA0D32cc0DbF797aC6EAfE5",
    "userId": "198179849"
  }
}