{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "378587",
    "entityType": "User",
    "nonce": "0x3d3e0e581c561596a470c4ee293d71b40dc73d635acd80d116f05947c882865a",
    "signature": "0x3d55e2baaa0161a928d506d5b6a8d644ff9aef0c8fe0665caa315f2a006a0a9a20f105f763536ef5ff6bf89fb21ab1a99b5b12e14c29859dd7d7ff2565fd0ead1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}