{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "222",
    "entityType": "User",
    "nonce": "0x53a5f533e7b653c627f20fa613d25a476d84625c17bf05c4ede5e6d6a983071b",
    "signature": "0x91c66639a7090c53036e0dd7d5d78542828f0074e6eb86ce03f8472a0b1caeb91b45ff85cf0f2e83b9c163636753e01240d69dcdad1b9608062d6e66f89a2f6b1c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}