{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8aa501e1a682910dafdfffd6ab54aaa8013b4fafe702008ff966708351bf77af",
    "signature": "0xb64a934053846be90eaa87028c42a1259e7845c1519de2f278c9b4fcd7016f2a6174d1c15e024968c9e3b37c9733c69d54fd40682e8a2322ddc3fbafdec801991b",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}