{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4f107a66856b7298ad579ce3bb42db99de6fa7e0030cde621c22cfb636f661ee",
    "signature": "0xedd41419d0fe9f9939194beb8c945ad1240fa7ad701a2763856d1414063863a425acdd64102a4fdbfd49cde4d631b0dfb8815895926979cbd1dfcb818ae42ae81b",
    "signer": "0x8A4B1e7E27d0Fa3205B654E4E31e77D0721Ca888",
    "userId": "774411189"
  }
}