{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318966",
    "entityType": "User",
    "nonce": "0x975cc44579c5f91e69f5edfa2ccbe587d3c8565db81451962eada93f35b2b767",
    "signature": "0x727b01c215b2c58b84f3e9a23612ef1169ee713f254e9b6e521d21470c6032a377aef5c28fc32460af8f5a11734e90c19774d8a08d8b17a24a5a38be918c3a211c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}