{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xda51dbb0ab6d792fa4be0afbc1271de74a4d238bbf1a4b4f3fed3a1d47d1383f",
    "signature": "0xd15b5852f119fae778fd63885702b6bfc5aabdeee64003eda92890b59e2fc308049b291e55d0727537c410ff6b0bd58834adebaaf3a0bbe92ae1536438d0ac941b",
    "signer": "0x83f598BB5B9CE7ee1E5ac41f7a748645Ecfdc394",
    "userId": "690748054"
  }
}