{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353528",
    "entityType": "User",
    "nonce": "0x8956f5541f3caf44b4430fa0a231e669c66d9cb2fd35acb08a30daa3d4a07d55",
    "signature": "0x8444a4774dd8fab612535eaea0d2c30426aa898c1be11e105db3690edd1286a44894ce0fbf9921e214d0aa1072bfb292394c0d5f4e5cf58dfe321a90586adfce1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}