{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1721",
    "entityType": "User",
    "nonce": "0xacebb44fcd010490f1561174d12dea12851689c11b6c7ef3c6c09e153585f9b2",
    "signature": "0x100d14cd700931ea1d06b1add3ca14b0483cb100449566060478bf714f3144e9553972deb50753d3c1d349a9ed044a1defc609fdb08ebb4881b5d2be55fb67b21c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}