{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x87dbe94d677d364be38e327d128ce7120f9e090cf480a61485b355a33b67ddcf",
    "signature": "0x4a91a5edd04ab770c4eecc103ec7d5e39d71089d61f32d2df70b73aeeb02396a5f3eed903725319c719d42c9fa039b406cba3c62b5b8bf9a42d31f28930abfcc1c",
    "signer": "0x211872dCD6ad84247bC3a976854B885508634f20",
    "userId": "424479086"
  }
}