{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x99e1ddbc865262564a8d003549b6e946f1ea999aa70b866e59306be6407686c6",
    "signature": "0x8428008fb2ac6ba10667a31fc395752cc1ef06b2f7b13677f56d7d2f57183cdc268f59d2f0ac6a7f983352e0b23e2454ae9a7f53df93620ee40b69b5182255911b",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}