{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881011",
    "entityType": "User",
    "nonce": "0x1e9619a70d23c2a4e294b571f20ac348386cfbd858dd533d14eaf6bcf5583af2",
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    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}