{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe347222160a20f89f68645481b6ed3a5d7c7005e36d7a14b688d82b473999b28",
    "signature": "0x3a9cc4b9b0c988b4937f56671d1990307dc86a071970711cddb5165a1b7bae4e746d5e2729597065e202004ab3eb0589fedc6df166c71f622a2fc84f22c4defa1c",
    "signer": "0x55408F18dc0E716333F0688A0Dc07439D875f842",
    "userId": "351579823"
  }
}