{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214768866",
    "entityType": "User",
    "nonce": "0x73ae20e87eb12d2a4e0464b6f8f546a839ca37c753ee757a6350e10b5a786cdf",
    "signature": "0x089294c3f7f996d772cf7ac9d6611578c04c2bfb327cac8ebaf0d98c3483d5fd70f80461bb3a3b06518b9f7b93b5d6ba2d3486a70884032447d8b857da5fe1951b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}