{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15030",
    "entityType": "User",
    "nonce": "0xf9610816e8fd7f4d5ffbfada621c586875bb5f247e616070461cc274058e02e3",
    "signature": "0x9579c982fb6ea1c32014c3cd77d13045ac19e8dc7f10551302a8f3c3c7bc2a4e390839b57b65b9cf80c1a12043d390af738ffcd0d7b04ef5b99d1275814755c51c",
    "signer": "0x0246262E4959323EAC2FBf603C6D24352d57Fc51",
    "userId": "700531000"
  }
}