{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x28e9abc83e4b4da67a89fd0562470107b17d8e739c4dfdca993f2fff3ef4ee48",
    "signature": "0x1ef5ba8b47abb9f278f9fc214dc9361e83acc38b6d54f9bc4d5fca68296f6c275e70f1882bb2f1c38508097540d6b0c58ffc55f999ff47145a52c158a51d7f201c",
    "signer": "0x56F9aB3CDe890FD19dB74959cDB5e44A66e75080",
    "userId": "266551296"
  }
}