{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x9f1041ed476c6049397dc50ab193e132bbc18751def9e3ae78b65be7ae70ac09",
    "signature": "0x0d141a91672908a2dbe599ff21354c8840dfeb20157f0adb6d34ab81f9a9994032310451d029cfd2ac1ff51623a4da1c703c66f5cf9c2a645c3d125a78df46561c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}