{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50368",
    "entityType": "User",
    "nonce": "0x5e574ef8817f0f47660e3a739e3130d5b7e0c0a89abc0229b76a46225b7f54eb",
    "signature": "0xa77a415046056123ff956a8678e68b04f066bcb2bc35249534238d04f6b9fba51ebe808151a3f26abe0cabcc5e2f29b16790e675cd50eb59c014254d7d37ed2c1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}