{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102143",
    "entityType": "User",
    "nonce": "0x2601f571d3b7b58337bafda11490226190d7e81aae3270dbfd07685dd5e612dc",
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    "signer": "0xB7B220c5AF64E800eA0FC5728e1C58B834D5E918",
    "userId": "232868"
  }
}