{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "744859168",
    "entityType": "User",
    "nonce": "0x763498386d36338f0fb0043e214a17b803edd416e3d94ff6f56319f3a7173288",
    "signature": "0x896b0eb7edcffc788ea924b55a4e5271af352955cacd31fa144265c51d0b415818407cbf1d1333b69c645c013dc73a68bc2ca00195c4bb7eb44458a56ef3c8a01c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}