{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0x6fd00f51c89f4769e85a07841d56d67f0698cfdeacb6657af932232e4deb1976",
    "signature": "0x6367b68cbf2121194a2d3dbdaef251fe1e5debeb23d2fadb60e99b764f3357d6473e2140924b11de9b50a79bc746ff5e0a767b20d19f8f4777d1017113ff7cdc1c",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}