{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339645",
    "entityType": "User",
    "nonce": "0x5cb8da5cd50760fcd276a7ef43f076340646923725521346a1d53ebf34211dc6",
    "signature": "0xc5e27cc7c28213832dcebc3bfb77e84641d2c46fd5578c15cac9d8038e85abd360f58e010dde58c6d8400a95c6506fb2575b7f50a12d5d1231390c3ffa067a421b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}