{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x23b10a50cd4c20af1208427454cc851786cc5285f16fc716b4d1bc3b2171956f",
    "signature": "0x7c914ebad8c252174b9b46342d7047e270c3dbbc51b471c1f576b1598eca8fec0f2d7b028c359dd134ac8ccd3a82939d3a975d211fceff5456522ecd1a2565cc1c",
    "signer": "0x2466a51cb8321D9eA42aA788c554c923233A61e8",
    "userId": "526567380"
  }
}