{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212539",
    "entityType": "User",
    "nonce": "0x238277f5c03db2172c17eb85cd71187ebd7d92930fc90e75252fb7a8d05cdb36",
    "signature": "0x0720ebc6702529de1b2bd4d2b6808dda635eef50b402707b52a0c42281c77f8e02670a6c51bfc2814f67e05b93956a4d124748817ba4edb1f74819bb724e6f0f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}