{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "510814511",
    "entityType": "User",
    "nonce": "0x5cb731c0b6b811951625f64e6883dcee00df8b97cd8b488abeec175699b3862e",
    "signature": "0x46d5cd942de9b5470d1d2f8e565e47d09a60806a699d3e99b030c732abf032f975418ec4f7ac4023501c8d810c5882177e58279ed7a48b12607f911bd6abf2b31c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}