{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "777",
    "entityType": "User",
    "nonce": "0xbacde0d98cb89b6250afa4250de23a5bcfe381a51b17c2aeea012974d8d3b4b0",
    "signature": "0xdfd0a147518e6f13dfe1daf54c36429a6b9fa44529e6c2ad617c45ef1531404b1a51941c82cbb9c81ae173b37b6718b4d04682a05b7875a4e224bfd98dde777c1c",
    "signer": "0xBbf8F4053B145E8eC905ffb20f5b4e80B183D48B",
    "userId": "960158487"
  }
}