{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831117417",
    "entityType": "User",
    "nonce": "0x14e052621cd3be8303826ce01c3d2589418895d3cf82309251f11edad9889299",
    "signature": "0x495b6d7a157fdc25c2217709be4567b909029e6a44bc60e0362a34c179308d2d3856d0284565ef8b4f3a297e0d959d50deb167fb6001a28f2500582ea3ae4df41c",
    "signer": "0xfE8b7901289A70702AC15CcB11911b872E54e80D",
    "userId": "540022120"
  }
}