{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "324297",
    "entityType": "User",
    "nonce": "0xad9907d96fb11f6e93e0b48d6ad1ee220b90d7e907aeb9fa443a50535448d60e",
    "signature": "0xb2cf93a1b87773609e438c2b65148189865669ad970152c23a3c51d572c689fb6395e3ba015ae3bf3c5e19775eedca21b388853b335bd163894fb146e4540c4d1c",
    "signer": "0x3e16afFf69eC32202c1B755Ad919C7aA325B7aBE",
    "userId": "902811065"
  }
}