{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "573266649",
    "entityType": "User",
    "nonce": "0xd6ea788245292296fab2d2d11af4a788c79bd6d8a311d2a81a8a1db9fcbdb8ce",
    "signature": "0x27fe4059eac12e0482ea9b046b449f5784823a51c5e8cb534759e789eed7427e7047f79c6ae66a0ef7035a9a17204d1665f6e51ee1c00edddd7ee48caa303cbc1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}