{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa5bc52cad076aadb8d57bbe622d1de7034678c9f5f708e4980966ef20f93f087",
    "signature": "0xe5c830c18f25c03ecc13024c82bbef8ab41aae1b53205b1de08b1741643453f3112870f5bca7d36999d197bb02cbc08b2eb997e7fe01189904b3d0bc2ae98e2f1c",
    "signer": "0x3B668D03B0741dEa82c23c2d4c43AECaDBfc4902",
    "userId": "886725809"
  }
}