{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38f0f6eb0ce5b5e7de611aa6591937ee32c249d6502b580c0de70fb811880fe1",
    "signature": "0x7dba854202f52c3ff921cb307b001fdd13855b11ddafa834cc71bb945084b75f2901188df9658ea3405ac0314d2eb8b6be166cd16f24d69769eab9eaa9c0763b1b",
    "signer": "0x25F75388E502B5F033aa0b5b599B14D0F0f75a4a",
    "userId": "357543587"
  }
}