{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906222947",
    "entityType": "User",
    "nonce": "0x5bf6c701ed3320001dd2c1796bb38ed22435a07d615b6c7c0f17ac05328cf395",
    "signature": "0xf10aa6c5fbb7290874a9d4e2c23491edbbcf462d892fe3f2f6c0a1ec203f1c5567770f8b39a81419a8c2fd857f11858995572c39765c5836ad509d305155fe621b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}