{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a34e6b3dc96d785e1e92cb83ee18a0028474a5278aad8739f829aa839e4a8d2",
    "signature": "0x2972ae4e2157c6a53511a2cd72bc99afc5a2c170a7beca47f0e9f5779706510b1eb6517631d0320401aca57fb2f2507df1a38b4b7218cfc7edd53f8ba336c69a1b",
    "signer": "0xC983e1eb8a0D8B0fb0A307901d377D21f287788C",
    "userId": "192367515"
  }
}