{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354535",
    "entityType": "User",
    "nonce": "0x84db06c9c0960eef34f09e26b8307987a7f82c4cecb6cd42a0d59b3cc17db134",
    "signature": "0x9dbf35fcbef4dba77bfedc1c7a945b0ba15d013930a32b9c197d0fd2bf7921f9127b03ee72431b027cc3bd32aff443edf9f8fff28ab2842dc38e1b2fc17f3bd91b",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}