{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "273836",
    "entityType": "User",
    "nonce": "0x3a76c09768267ab60e422bacaae5395a2b52590cf4a034c0fd5f62428d417461",
    "signature": "0xc45e071455983f1296b12559de096f71b05ba5d94d24045547881e37f2f9a0be5886077becd4a22e6f5dd9eb1e8623740bfabcaac03f03485dc96bc765c4947e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}