{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xe40dc66f29cd8892c4fdb1102173196ce6030a49a20793ebc7e0dc4223665ffe",
    "signature": "0xfca01a69aa7ad9c38a3e50294e91809b5d852c7c9fb259648ea140262554242f70522515bb84fc50f4a85701ccafb547a223c9c42f847a1845821537b1b568b51b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}