{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa0a80f1d401c20f7c51140922cd855a82988df2a8330727ac9e90737f638698d",
    "signature": "0x2b5b68ecba55cb48493a263f719e880b5ceba4495974f13666ebe636a98dbd4722dec113c8ffa80cf8dc7a4d446839cd52998221f67968b7455c1a0a75267f881b",
    "signer": "0xB4e78E0696D8bF171eCa6d2F8f3048B8bc3Af1c0",
    "userId": "647219291"
  }
}