{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "903958768",
    "entityType": "User",
    "nonce": "0x269ab2dbab5d49a7a81de09ab74cbf61524dae356f5c384d40742e0b80082d02",
    "signature": "0x52d35daf153a8999a06f84ee596a8c51130e7c4d2f41a717a45bf956de8a333f2046dafc42594f195401e91683132ff353c0f3010df4512b6e922a72d834c1f91c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}