{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "201510",
    "entityType": "User",
    "nonce": "0x5a1a3ffb7d3a13e33c39d9c3ce43f4d700d5d6a23da2a663d366fadd006ae2da",
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    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}