{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4aeb7f1b8393ccd257f2e6a159b09701a9daeaba350e0a1a2153b60c98a76a42",
    "signature": "0xd8512c325174a8ca3d60ef236227ecdf6ce3e45af42808c9a58998b25dad3055037620ee40c94ad4007d067e399480e80aad922a87b6b19cfb97eddf251f605c1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}