{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "199337",
    "entityType": "User",
    "nonce": "0x0b88705ec8e084e7c6b881e918db7d3f5577e60a6f190bbd62184e018e121f49",
    "signature": "0x9f54e67c76ef0ffc25f43dde406cdcfcf6905f222ca7c4dbacadb5f2e90713396c0e85857b5f5f3fa3a70cc6c6c33e2b8a0bb12d1ac5dc42176bb1222604ffbf1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}