{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258655155",
    "entityType": "User",
    "nonce": "0x7a02b974f97194383cc89f6d9a640994c72a28200ea8f297d9fc9abd15fcde68",
    "signature": "0x275d615d49b72d3a5beb6134ff42531ad4687e812943b261899c5512b5e47aa8404a30f9924e00a492741c9a082a4d9d018ad0ec09011cbc96060b170b3024e81b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}