{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8baeceb0e28637744aa381670afe380a97375982aa79de63586133705508a2aa",
    "signature": "0xaffcc92de6dd313b1de7726e9979bca8791b120399fd6e2aef2f81b0b4a8af95764c87dd28b4e616f380d03a9a0f541d6891fb5fd6af419dac4e1cbda0e45f341c",
    "signer": "0x50B46Cf84b5D69931E6fC23814e8701869B69F8D",
    "userId": "820977663"
  }
}