{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "340717612",
    "entityType": "User",
    "nonce": "0x85737401fd2568bb0e8133e5a0931f65dc2091be0e4f19b5b012100bbde4a5e3",
    "signature": "0x5e7cefb3e3d6c5e53253480b081a203b4381cb659d3b2152191728579bef2244341521fb1a157e142c05e1b6e89417c81f2e4a71d48ae41983c9253a5f7319941c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}