{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "421774111",
    "entityType": "User",
    "nonce": "0xb4e543a0219ec56fdcd39eac727dbb467a9d8346f9717fd6726541e430f5db41",
    "signature": "0x38d6d77898933e21fa78402a34c73f0cd70fc3eae0ed25fff385c150df03c95426aa947387d875f63b5d05970cc3b22c429fc13ec8a5b16c22f9f196a66530cd1c",
    "signer": "0x6015AC6ad37b0328C10a529E70348751FE8ffF41",
    "userId": "176201"
  }
}