{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "396603",
    "entityType": "User",
    "nonce": "0xc4a1ad6e5d557ea8314185ab2efb62b57d5f5906e3b53e1a18b10a8bf73f747f",
    "signature": "0xf42c2038c3f5fcfe202b15cc4e2a8049626a3cd4a3df4b385127d8280983f1616f7f7f1fb37e31d31cca881e3b55643d1720fcfa2c203b18e34efac8e7230a831c",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}