{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5bd6eb9baeaa0ecdd25079de43e9344d933c4014869f38d6c90b98321dd1a9eb",
    "signature": "0x0eaad2335062e9d687922dcceb585c3c9e2e9ea43e6e0be4dcad23be0c60707566151361f8bca1b7163a21adc9ff717c9e064684f0cd1314c91bc656f86139201b",
    "signer": "0x37db63A0ff3DDE75Df3eeC27686e2E55B3Ef03a3",
    "userId": "651857432"
  }
}