{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333145",
    "entityType": "User",
    "nonce": "0xc7ce307f753734bfd0b3e803e7dbb51bf221c8f890e41564a170f816fa8a89fc",
    "signature": "0x5571db07c13c8d2cae44f11eee528b9e1d8f6fdf5453e0887a971ba45ff38b487790ec0e19d4a69e82e383af5c96dc8def77b4b9cba611f4e67c756b345ace261b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}