{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x16d8726fea85f39e4bfc2e7cfc6fb157ae8b80b8cbe052361cc07bcea6aab616",
    "signature": "0x547badc392e0123d0df619310b0ce15b313c552ac9e640d4f46735600ae810bc544500566f8794bf01d77df123064393eaaa7934065c03070e54e5106cb5f30c1b",
    "signer": "0xFB1D43C768E2C6359F2e1c154f6C5f9187F343e7",
    "userId": "166447128"
  }
}