{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd04b2f926732c8746f53837a2d3f1f0231a015cf65c1f0dfbe0e4742e6baae1a",
    "signature": "0x529ea777900e8f2b5a9e34aa34bbdf2d92a7c711da35d2ecf4140fe3052895b0123e27a71f8dfc2d093598bcbb83bc177c4ebfc9cb03aa2eedace856086739861b",
    "signer": "0x21e530f5EA8E24d2476C3Ff8253D151693719385",
    "userId": "854449345"
  }
}