{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "185420719",
    "entityType": "User",
    "nonce": "0xe2940076be4daa9fd0ed4ea25ef3263da82017b707ed53bef68d61b17ae02204",
    "signature": "0xc915e02d7659e09aac590d76ba7308e38191d160058b4e58fe6792acd6683a26685c61564d769e965132e5d8c0eef305a79561a27b31578ca46677cc8e25cb571c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}