{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943474958",
    "entityType": "User",
    "nonce": "0x5b1165bec9bedd26cbb3b52c4f9dc6f9423d1357877f8b45675657020014367d",
    "signature": "0x601f78d1d8579abbf6465d6c6ba4c5dc29f22904e5b2a3c3fcc7e3aa847fc58b6e2ea4ab23ae45f716cbabc0b58d38eb304197e172bd709938803f1794ad92f21b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}