{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "770725415",
    "entityType": "User",
    "nonce": "0x82ef53cdb911aed3a5dcde3948b54e50ae0fb12ba00648410980193f30bff28c",
    "signature": "0xb4238bc36bccd305cabd4eea92302944502666f00c609402c84664384e4cea651aaaac8377c17ba108af094f8503b49ff9b2ee27ee572901e3ea84f741e492091b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}