{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0x3e6af458e196d467bc7440c4bae5ecdc943bb0a9f86e4be042ec78d1c4ea437c",
    "signature": "0x43e8a12e0454c833477ff4289c7ab5b07a9efa65459762a7c56358b342dcd04342f112beb1f0934ac47a77349bca6a651233939a252283943770741381742c6d1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}