{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0x355b6bb652eab63cf7e91467f0eb77011cf5687b865788f36281b9a2345d557b",
    "signature": "0x59af0a3ceeb8c637e0156de7c4221387e0d3ab0d987f79533766677a3fcc78696fe4f397916dacb1d7422730c6f19724c43dff0c6aa41cd7e6617d2e05a635551b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}