{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "853141872",
    "entityType": "User",
    "nonce": "0xffd57ea398ae37b53b9e3dc83920639cf4763ef1110c8e4cf92767cea92bc853",
    "signature": "0xd87710da711a3de68f2877bbdce0f05529fa6f0a0a431ec75ae7f1120a55f825481647ce9a77b8c7a57e9308bc4d9de054583425b13dd72f46cfc98b201e07971c",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}