{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18103630",
    "entityType": "User",
    "nonce": "0x00e74d3efc28b6a14cec0dfd60822bf6449f6cacaa3a3bf4d90944394f00162d",
    "signature": "0x811a191c501ebf180a6e6f0f3b9e19307f9535c6fe122a66d34e1245090f430f25960cf9f0aa5a895d68806d9b36a9c3a4bc900e17f9a24b48382bbeeb2e57831c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}