{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645526985",
    "entityType": "User",
    "nonce": "0x24768b3f3508d9d6fa03121e4b0ac43b9b202909236c8e34e01be62f9104fbdd",
    "signature": "0x6168fef29cd7bc872e565e2a2d342f5136b6c38e4bc824f864fac16656ee45445b60b5d29cfa17a22436dcd82dc03cfe0d3f10a3fd7d10930d9638568b4d21281b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}