{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9dd3b2da58b3163c47975e43deb4f5b8e184719947b0dbc34cd0fdbaa18558b2",
    "signature": "0x543454ae765701a89bae0738fb23e42effa73da149bd9dfa1a4379894da1adca3c98de2538f096bbe7a0e2f8f735cdd1de9cf97abb5451a14e4809610aa3fcb61c",
    "signer": "0xE3d386a379AAE82b5649323eb7B6213C63789855",
    "userId": "104699486"
  }
}