{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389420751",
    "entityType": "User",
    "nonce": "0x74e100b92156330337124ea936448a603cdd17af992ed2e146b4f28364294ad6",
    "signature": "0x22f5751693a6f2e6397a8193cd8c51cf89d6619b0b8ddffa6cd8ac1cae8a17775ae31895a730810cab814752ac7593137e88c71c44f878541b7b8eff843db74e1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}