{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7dd73e40fab86fcae68f4e3db9f092279f66558f526e249fdfa2e8fe8cdce36e",
    "signature": "0x21f99ee5615012f08704a30f309608cff996beddbee72623019ab498f05e1012105fe91597e0de369f4b2429644f9836ea629040055154bd101ab9f28d71942e1b",
    "signer": "0xa686d3BC57c31e8db00d2EdFF2EAD58668B2cd55",
    "userId": "277144197"
  }
}