{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146745",
    "entityType": "User",
    "nonce": "0x4b1c6a9afee07271fb03eab42c1a556b5e25b93fd6ae3815d55f74e6d4aaf39d",
    "signature": "0x51322bc7d0b5760642ee017d0f303e9d87c06c4a24bada328b3a2ad85be228dd6390e2e8b289815f1effa3a06de2c89ee90dfb21a34d6250b3a579e5fbaef5ec1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}