{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5436",
    "entityType": "User",
    "nonce": "0xa716e83d3482c3a92ec8fb1b3f75a377870c00a13b89c88026f29901457c7af4",
    "signature": "0xe120c0d4b54983a97ff1b80c50a8cd474e374b5c21de26f89ee6d22252c11ab56d10116601965a779dac6f167914fdf0d457a8cfce479e48de40d89b68be41801b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}