{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "840432946",
    "entityType": "User",
    "nonce": "0x2a4e418e76d542a3d91ff2dd5c8b196afd5d669bef451a2fa2f943d037c677c4",
    "signature": "0x71d7855e2d14b53f9e11ee730365fe45c2e325ee7b4b5a27b215b1f001560a4d4301aff77c579f64a125eeb33aca3112a7926df336772e49594bcafb97aeb7e61c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}