{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe7f55dfe3b32dc2c2c8626e978ff9f101050d14a70c57c7125d63f7f8cedf652",
    "signature": "0xed9d5e147d8433c9bdb66b918d28e2f36acb09b17e10b354562c49dece38a3c427ffb845a0bfc5667a76ff171e3a71107e1c60fd640c27eb5d93c339ee0a49b51b",
    "signer": "0x3864F0ab89ebC78F1b2edE5d22B8B038Aa3E9bc5",
    "userId": "148669782"
  }
}