{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd1566a81204b9333bb4ef70b8867d974b957193856b8e88b49cdacd71743506c",
    "signature": "0xf46e037ebc21deb063f20251eb014243308e9781053ca6c78f570d5a82f3e4065c954d43dae85db66c8a4002707fca5db68331f6e1ea4d056fcda60108f328441b",
    "signer": "0x201437aBF3e8E4BA25a5E453b8DD32DFeD9C4486",
    "userId": "598688914"
  }
}