{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "289632107",
    "entityType": "User",
    "nonce": "0xd348ef4edf82f8981ed399d44cce4a0636c2660b8e165845d7ecc750bf8cb425",
    "signature": "0xec5bf36da62c59da29973d02b049f33dc28e4c1b436b9e5b2d26fec94b65ad327ed67c09a8db8e24a2fb9734ca975a62e2b0db60ea862ed76df081293d946f8a1c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}