{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x90847f5b8188df95769da99a687b1910674ec86dfec7a9b2cd2ce7847a7fdb8c",
    "signature": "0xeb003f02491d201da5bb6864bba86d3487495889d9dd212ed779a05ec605d2644ac01df4a384589b838959ced2d9cb6f70e41e5887c67966044bbf255e53340b1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}