{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "386745392",
    "entityType": "User",
    "nonce": "0xb7f57bdf64c2d3610c4d7ec7a198259ecc2efcfc4645d16d25c212a9e34d42dd",
    "signature": "0x7fab9e1299ca3c6f7d53a64c61df671495d1faf6655e2b0aa0c61daccd5c339648faa81b51cfab8164908e2ad6c56af50570d8134c65d982a63018f1c359ba211c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}