{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309421",
    "entityType": "User",
    "nonce": "0xacb3a11fb402237270d6575e455d01e596a58863f9aa2f7e14bdc3f8d7901c36",
    "signature": "0x5382f4360b0269782333833a8e0c43d59f58c4975ff804b0cc005ceabb3074d112dfe721348ef0479d1e619e1082fd5726c00ad6fe345f31bd7b620f4487df0b1c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}