{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854915999",
    "entityType": "User",
    "nonce": "0x4c94edf94d303e0999e927b0cd7eaaf61eb6a4c498c1f3f2d722942c1e81f4e0",
    "signature": "0x83692164414bd73a6bfd4e38bf37e8467251f900bea1c3abb6a5d6585b18472c4b67129c8dae22dd72e2e27a1ba9838477bdbdd0fa50cb4c8317f238828be9c01c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}