{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdbce3a420cad6b128c5289241b22886c226a247193c637cda4f15b01ca6f92a0",
    "signature": "0x67cc92c641e0d88b9ceb23e0f26ef49f0f138554e2d0e4a87b9cca58698aec133161c7aa9f7690f245ca3a295ee79a3e52768cc6440f0fc31f18e1342dd4d9e91b",
    "signer": "0xe0c63F31E02C8904B91c7C3a985eB5aeC97E3CF4",
    "userId": "29864791"
  }
}