{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105375",
    "entityType": "User",
    "nonce": "0x28cb671ca7ab116a38a0de896305d347f21da4513170ca60266ebd69683cc07c",
    "signature": "0x91bf6406405fbed1e3d4464ba771de6f008dfa9afeb1a94631086e5efc0227e57eb6913bc5b6d7405fbb554c35f27804c0dcd9cafbe08165ee4fefead65fe4ec1c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}