{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "63581371",
    "entityType": "User",
    "nonce": "0x8909d29ccf890cd9938c78025a94cb07ca97622d6dbfcee2403320b588d89145",
    "signature": "0x79baaf23019a3a3df57b495153d1f570aca56606b5111733f9c0a3cbce058f85442f50b00cef9f4deb73fe613845894963f5c190744390654caee87447d464a21c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}