{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x3b7a8697313bbcb109bc69dbcb41ece81e488a12f9c67642a1d51603fe278ddf",
    "signature": "0x7fe12e215539c319b57b60789154616c04cd22ed5c18d2d4705119fc9747e2ef036cf07b9c26902b2ca7da1bdf0b0dd7ce03c6b5b45340c6cf773b7dbe098ad01b",
    "signer": "0x02983e961DC3432C2378361f2AF43F27CC947619",
    "userId": "678485749"
  }
}