{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "296453887",
    "entityType": "User",
    "nonce": "0x4da8b95df237263f4ea725e9f84caec9675cd02f761bc0330595216cb915003c",
    "signature": "0xd04a5842c63b295a99e3c45b56800b413ddab3df65e195621010b98f98271f7944dd2fe0dec8d15582260340d4a83fdda583f21d1c39f63150656e05b2dd66cc1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}