{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353528",
    "entityType": "User",
    "nonce": "0x8904eb9ad88f2f3ba51325137c85d7a336554df8d5f9d6f47a7dd1e7490d8884",
    "signature": "0xf06b91ba7a9a4edf6a387292bfb2fa8b5831c54429bccdeca5210076525abefe6d0b27511114251dfa8318e4742332e1265187d2021d0f8fd21f36076a1033ec1c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}