{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "49721",
    "entityType": "User",
    "nonce": "0x63c9dadd72b11b952d6b3dccab0e38b3681d32fc7035b35a5f692dad6c50ecd7",
    "signature": "0x3bb886f0e8437abc83a438170c8e61b8d00c0e5c4ff061dd288e6b51f2230377228f5473507af9902058702f23efa59373877b8d4871fe26c98c16a170b63c561c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}