{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53770",
    "entityType": "User",
    "nonce": "0x9bd0084cb9d0b3a84edd93c09217f2a521810af39d88e67655de9c669d34b9eb",
    "signature": "0x11596c4d8fb08d406f32b059126b1b039265d68146758899d695a3cb3346d3f75f56b28c3f8ea48e87def14604546d1ae81c82e0bb2a5213c56b3b6c88901c641c",
    "signer": "0xF300c20BDBB459E009c4E55c08CFd33E12f8B0Cb",
    "userId": "782218508"
  }
}