{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "741977570",
    "entityType": "User",
    "nonce": "0x374a4f9ebbceb56c8b80971e29b67e1843cc55f2325fb33860d213c80a5f16a1",
    "signature": "0x1fc4ddc267f4c1e1a80ba402f24ba9ef0a72f1d9bce55186111045ceaba285471db1882f5f01b4418345329a8d041779161ebde921d621317c841e4cc93b0fdc1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}