{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1315446",
    "entityType": "User",
    "nonce": "0x7ce8a0f143d395a22deb93be3bf507b0aac1d34614ae33b38ed1f49d654b19e3",
    "signature": "0x0c77008a3a200dc530e33ad27ed15fd97f8699c8f6fa9f4c2419eb4a2a5f57e45c2a2f1505963a639c8e8fd1c465d62fdc733675c0387579f7b9909228e2da7b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}