{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420563019",
    "entityType": "User",
    "nonce": "0x61a03866ad34f7a995e9c8d726e24d25b891196408853615b637e6e1361ac939",
    "signature": "0x29ac7bb9d7a07ffbb538bf6e07291ce68448bc3f4daf01afcfabb361975363204ac4d6aee55f87c7a69e5f2b6f66d8c2139bdc5a83f5d1468b8d72b4c05e10161b",
    "signer": "0xcd864e8A0A043bf1B2DA4106C35c1daF234468a5",
    "userId": "784246910"
  }
}