{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0x80b39f1e220609f9a47d97ea733d8eb56b4c62e2c062f87f5bc3f99ee9535010",
    "signature": "0xb6a66d68caca2104bd3288b1c0232a5125d9479051bd604d19d46cb6271860d458cabde4cc67b89c8ca46d85a376198b151193047394f71ded19c911d437ca291c",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}