{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0x0064516613bd067defb049e917f0969e70d852c93143bd40416053cee4a23cd3",
    "signature": "0xb3acb8eeb694c277973aa4b04b730f95cadbb9016a886cbcc0b5847c3eef8c9416d9bd0941675f291c842390123efe76978de741797e66bf68619e764d8b9a571c",
    "signer": "0x604b4F353E759e6Ceb980b2Fa04e96FE85AC7d1D",
    "userId": "235338"
  }
}