{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "661378",
    "entityType": "User",
    "nonce": "0x32838173f118c3f57dc143c4e2fa9caabb01f9c60615f630539418ef4645a2c1",
    "signature": "0xeb10bf2a9fea0fb272c56bdb6b240523e9b49e2cd69239cd3ee3cfb826d1297c30767c29566b1cd2ad3d8a7a64cdfa53cc715ea10c27fd90564d0bfd98546f601b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}