{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137294",
    "entityType": "User",
    "nonce": "0x451f6cf3b81982f4bca4d5f018c39cf30ccdd365a9ffe8ba40c17e4593945d0d",
    "signature": "0xbd98611b6079f1f8bbc4a9e1b338190c2464a2106d94b2a193550f970fe4dfee49543a10b5d9c7bc402db13f3b7704f20885bbf62c24f23ac8e8030959b07d271b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}