{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "981716494",
    "entityType": "User",
    "nonce": "0x3e3c0931fec844e0352c001083dbc9476ea89c9e16f3053a19d2b64142a2b9e5",
    "signature": "0x20a772acffe85b4138133c55f29cb694d7674c63a622ad1775ce260371f70e7113e005f537b76ba0da694e02fec9f581bd32164df8032340a0cd40d85feb28b71b",
    "signer": "0xb68FB6A5ae9015De46D9634e946c04517523Fa43",
    "userId": "134619804"
  }
}