{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520317695",
    "entityType": "User",
    "nonce": "0xeb2aade5d4c8aa648fed1138b60f502c24aefbbfae3cc6693d1a2e876b45427c",
    "signature": "0x9b44ba943bf6d6bf0f0790d7c54ef46884c40701b8492dcb421f5c2a66ca32972e47fb93ff3791ad18d125b1e1fc6b5fd5de3d553e7d8dd8c4f6fa7623f648321b",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}