{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2dab1dc038215bc60de6c288306ad9a42283a39485cb8ac919aad4eebdf82691",
    "signature": "0x1fd09a1c84d372ef176f4399d30f6dd9c92f43e816373f9952c17c64dd8db71c38b996d1794165a8ae96eb947961d4a1c899fef54542efd680455185d429cef61b",
    "signer": "0x220e20a4d7dE27e26a3ddECa10269BEc7c3094bD",
    "userId": "567899841"
  }
}