{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "916206761",
    "entityType": "User",
    "nonce": "0x8e292ab68d8d7a981cab25a9e9808a55eec0e44a33591200f9e1344ad245c453",
    "signature": "0x973f18fc64ad9e5975f1ee2361ec4422b14dd993fa16dedea0204b8bcdcad3b56ee4aa1533802684591775334958d7a42bc7e3c1115d4c6d572597140c70d6b01c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}