{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0xf014e5766383e7ee7db8eab4b9a7a1089cfa2e4f00d29bb52c65916619b966ff",
    "signature": "0x669cc4719afa25a672680a736cfa3d81919ca4d2ceae6d4441140753e36347822936d9e2f4fd0e8aa7b6529dc8e90d429e583b7f349c5c7a740f3ab9098691841b",
    "signer": "0xb7cfC3e8ADEA33d90F4f4B34f672a1C391955768",
    "userId": "120328"
  }
}