{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54432",
    "entityType": "User",
    "nonce": "0xa568751bcab3eea8293fab7e191463140794362ec0e92244e7b0143653f27d4b",
    "signature": "0xc67e309f613f4b25c03bf7330e48d8f26e5f91cff56dc17567a69b793aa1f8c272d53e8eae23fb9a10a0f7e14c0368476a7f59decbcfefd74633d11bb081e7a31c",
    "signer": "0x862060c02F28f6984692E1Ab0f15419eFdc91D0A",
    "userId": "321032997"
  }
}