{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6de50d0fbcad42bf26546c2363a72ac3a8dd630f2f12001be7f2ec7459dd87b0",
    "signature": "0xaeda4851a7059fe953a72ab92284445f9de169c68481824e68b3e768d3189b9f0d75027c0099d0ad9304afbe4e98efb62198e7f52f4b06111d5b1aecb62f13ee1b",
    "signer": "0x45f75f86E37A66d16D1706b28CD1f10097a41deb",
    "userId": "109355404"
  }
}