{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "813003534",
    "entityType": "User",
    "nonce": "0x2752c305a5b7d6ab7d4a741dd9310173aed54c6043f70d344624daf0d87fb610",
    "signature": "0xc1e5d41c742bc51612fb2af48d2c95599a4f11bb47959e18f7b5d7c6dcff230c72fc5c1d5c7f051fdf0c793573e25581093acd9794e77ca8397b6c5ab70d8ef51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}