{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323361833",
    "entityType": "User",
    "nonce": "0x7fc81864ddac9a532500c2631076679f41ce3ccba2f748b66f59c8b23e569a89",
    "signature": "0x6f6f25b971a6749f298f00bc2d01bde341926741fce77d187d3ffd19593721cd604ba99be63faf5de7a6a7733be1a1d4e5011601212f8a9e47e82ea2f1cbb56c1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}