{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0xc2ed30f5197475470cbf64b7275eb0b76faabb28b18c01509453fcd79d4b71dd",
    "signature": "0x29fed34034c1a361321af97307c32e235abcd35026fe0b112cf1bbcc0191a2a63eeec635546257caa5f99073bb0ed153983cf25f69c67499a59b2c9b4417340a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}