{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53770",
    "entityType": "User",
    "nonce": "0xf7c691539fb2260b77794f20815a19dd7dd991db0b45a76d58e75c3a9a23c351",
    "signature": "0x488a408beb02b95f1fee999ac310aefc49b66ce7f34bea0fbeec3067c409b54b248f676ed1d6ca99bdc22cd30cd0c31460a99858028c9ee380755665d2210b911b",
    "signer": "0x451d1Fcc610ac6c427d570E73Cb3641Acfa23b6b",
    "userId": "134623867"
  }
}