{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "649712",
    "entityType": "User",
    "nonce": "0x505fe73bae2011a0db81655b614a2982063dd1a4324bb4877359046ea1fb0b3d",
    "signature": "0x7e578c45601860a33b7a4b268ccaba9a7ec61d9201cbdc693cfb3ae0d903b31a1e6bbd9def2f298ae1624e70da301b1ba861dba6a1a92bb37325dbd3327256781c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}