{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xed645fa93de5245511566423112f46bfd9c20216620fe1f37c301eb8609f0be9",
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    "signer": "0xD679D3343b80020b2743543Cae8b21a2d4b491Ce",
    "userId": "736265942"
  }
}