{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9309405d60dc852f6443ed9b2370e1f060c3aa8093d45cd3e87b7c9a2f0f24ed",
    "signature": "0x7dc258cbc09a2b4849d66e32aa2455d010a103c4b09a0c231d3073a7d81cfc7b5438206e56626c54f8f8db0f852909c762dc2ac7404993d223f0725ad6ef5bfc1c",
    "signer": "0x58f38B9832d174687238aC84A5a4538D2F5Ccc71",
    "userId": "505391791"
  }
}